32-bit and 64-bit Windows: Frequently asked questions

Here are answers to some common questions about the 32-bit and 64-bit versions of Windows.

Upgrading from the 32-bit version to the 64-bit version of Windows requires that you reformat your hard disk, install the 64-bit version of Windows, and then reinstall everything else that you had on your device.

Windows 10 and Windows 8.1

Select the Start button, then select Settings > System > About .
Open About settings

At the right, under Device specifications, see System type.

Windows 7

Select the Start button , right-click Computer, and then select Properties.

Under System, see the system type.

To install a 64-bit version of Windows, you need a CPU that’s capable of running a 64-bit version of Windows. The benefits of using a 64-bit operating system are most apparent when you have a large amount of random access memory (RAM) installed on your computer, typically 4 GB of RAM or more. In such cases, because a 64-bit operating system can handle large amounts of memory more efficiently than a 32-bit operating system, a 64-bit system can be more responsive when running several programs at the same time and switching between them frequently.

To run a 64-bit version of Windows, your computer must have a 64-bit-capable processor. To find out if your processor is 64-bit-capable, do the following.

Windows 10 and Windows 8.1

Select the Start button, then select Settings > System > About .
Open About settings

At the right, under Device specifications, see System type.

Windows 7

Select the Start button , and then select Control Panel. In the search box, type Performance Information and Tools, and then, in the list of results, select Performance Information and Tools.

Select View and print detailed performance and system information.

In the System section, you can see what type of operating system you’re currently running under System type, and whether or not you can run a 64-bit version of Windows under 64-bit capable. (If your computer is already running a 64-bit version of Windows, you won’t see the 64-bit capable listing.)

Download Windows 10

Before updating, please refer to the Windows release information status for known issues to confirm your device is not impacted.

Windows 10 October 2020 Update

The Update Assistant can help you update to the latest version of Windows 10. To get started, click Update now.

Create Windows 10 installation media

To get started, you will first need to have a license to install Windows 10. You can then download and run the media creation tool. For more information on how to use the tool, see the instructions below.

Here’s when to use these instructions:

• You have a license to install Windows 10 and are upgrading this PC from Windows 7 or Windows 8.1.
• You need to reinstall Windows 10 on a PC you’ve already successfully activated Windows 10.

If you are installing Windows 10 on a PC running Windows XP or Windows Vista, or if you need to create installation media to install Windows 10 on a different PC, see Using the tool to create installation media (USB flash drive, DVD, or ISO file) to install Windows 10 on a different PC section below.

Note: Before you install Windows 10, check to make sure your PC meets the system requirements for Windows 10. We also recommend going to the PC manufacturer’s website for any additional info about updated drivers and hardware compatibility.

1. Select Download tool, and select Run. You need to be an administrator to run this tool.
2. On the License terms page, if you accept the license terms, select Accept.
3. On the What do you want to do? page, select Upgrade this PC now, and then select Next.

After downloading and installing, the tool will walk you through how to set up Windows 10 on your PC. All Windows 10 editions are available when you select Windows 10, except for Enterprise edition. For more information on Enterprise edition, go to the Volume Licensing Service Center.

• If you don’t have a license to install Windows 10 and have not yet previously upgraded to it, you can purchase a copy here: https://www.microsoft.com/en-us/windows/get-windows-10.
• If you previously upgraded to Windows 10 on this PC and you’re reinstalling it, you don’t need to enter a product key. Your copy of Windows 10 will automatically activate later using your digital license.

When Windows 10 is ready to install, you’ll see a recap of what you’ve chosen, and what will be kept through the upgrade. Select Change what to keep to set whether you would like to Keep personal files and apps, or Keep personal files only, or choose to keep Nothing during the upgrade.

Save and close any open apps and files you may be running, and when you’re ready, select Install.

It might take some time to install Windows 10, and your PC will restart a few times. Make sure you don’t turn off your PC.

Follow these steps to create installation media (USB flash drive or DVD) you can use to install a new copy of Windows 10, perform a clean installation, or reinstall Windows 10.

Before you download the tool make sure you have:

• An internet connection (internet service provider fees may apply).
• Sufficient data storage available on a computer, USB or external drive for the download.
• A blank USB flash drive with at least 8GB of space or blank DVD (and DVD burner) if you want to create media. We recommend using a blank USB or blank DVD, because any content on it will be deleted.
• When burning a DVD from an ISO file, if you are told the disc image file is too large you will need to use Dual Layer (DL) DVD Media.

Check a few things on the PC where you want to install Windows 10:

• 64-bit or 32-bit processor (CPU). You’ll create either a 64-bit or 32-bit version of Windows 10. To check this on your PC, go to PC info in PC settings or System in Control Panel, and look for System type.
• System requirements. Make sure the PC meets the system requirements for Windows 10. We also recommend going to the PC manufacturer’s website for additional info about updated drivers and hardware compatibility.
• Language in Windows. You’ll need to choose the same language when you install Windows 10. To see what language you’re currently using, go to Time and language in PC settings or Region in Control Panel.
• Edition of Windows. You should also choose the same edition of Windows. To check what edition you’re currently running, go to PC info in PC settings or System in Control Panel, and look for Windows edition. Windows 10 Enterprise isn’t available in the media creation tool. For more info, go to the Volume Licensing Service Center.
• Microsoft Office products. If you just purchased a new device that includes Office 365, we recommend redeeming (installing) Office before upgrading to Windows 10. To redeem your copy of Office, please see Download and install Office 365 Home, Personal, or University on your PC. For more information, check How to upgrade to Windows 10 on new devices that include Office 365.

If you have Office 2010 or earlier and choose to perform a clean install of Windows 10, you will need to locate your Office product key. For tips on locating your product key, check Find your Office 2010 product key or Enter the product key for your Office 2007 program.

Using the tool to create installation media:

1. Select Download tool now, and select Run. You need to be an administrator to run this tool.
2. If you agree to the license terms, select Accept.
3. On the What do you want to do? page, select Create installation media for another PC, and then select Next.

Select the language, edition, and architecture (64-bit or 32-bit) for Windows 10. This table will help you decide which edition of Windows 10 you’ll choose:

Your current edition of Windows	Windows 10 edition
Windows 7 Starter Windows 7 Home Basic Windows 7 Home Premium Windows 7 Professional Windows 7 Ultimate Windows 8/8.1 Windows 8.1 with Bing Windows 8 Pro Windows 8.1 Pro Windows 8/8.1 Professional with Media Center Windows 8/8.1 Single Language Windows 8 Single Language with Bing Windows 10 Home Windows 10 Pro	Windows 10
Windows 8/8.1 Chinese Language Edition Windows 8 Chinese Language Edition with Bing	Windows 10 Home China​

Select which media you want to use:

• USB flash drive. Attach a blank USB flash drive with at least 8GB of space. Any content on the flash drive will be deleted.
• ISO file. Save an ISO file to your PC, which you can use to create a DVD. After the file is downloaded, you can go to location where the file is saved, or select Open DVD burner, and follow the instructions to burn the file to a DVD. For more info about using an ISO file, see Additional methods for using the ISO file to install Windows 10 section below.

After the installation media is created, follow the steps below to use it.

After completing the steps to install Windows 10, please check that you have all the necessary device drivers installed. To check for updates now, select the Start button, and then go to Settings > Update & Security > Windows Update, and select Check for updates. You may also wish to visit your device manufacturer’s support site for any additional drivers that may be needed.

Note: Drivers for Surface devices may be found on the Download drivers and firmware for Surface page.

Before you install Windows 10, it’s a good idea to save any work and back up your PC before you start. If you used the media creation tool to download an ISO file for Windows 10, you’ll need to burn it to a DVD before following these steps.

1. Attach the USB flash drive or insert the DVD on the PC where you want to install Windows 10.
2. Restart your PC.

If your PC does not automatically boot to the USB or DVD media, you might have to open a boot menu or change the boot order in your PC’s BIOS or UEFI settings. To open a boot menu or change the boot order, you’ll typically need to press a key (such as F2, F12, Delete, or Esc) immediately after you turn on your PC. For instructions on accessing the boot menu or changing the boot order for your PC, check the documentation that came with your PC or go to the manufacturer’s website. If you do not see the USB or DVD media device listed within the boot options, you may need to reach out to the PC manufacturer for instructions for temporarily disabling Secure Boot in your BIOS settings.

If changing the boot menu or order doesn’t work, and your PC immediately boots into the OS you want to replace, it is possible the PC had not fully shut down. To ensure the PC fully shuts down, select the power button on the sign-in screen or on the Start menu and select Shut down.

On the Install Windows page, select your language, time, and keyboard preferences, and then select Next.

Select Install Windows.

If you downloaded an ISO file for Windows 10, the file is saved locally at the location you selected. If you have a third-party DVD burning program installed on your computer that you prefer to use for creating the installation DVD, that program might open by going to the location where the file is saved and double-clicking the ISO file, or right-click the ISO file, select Open with and choose your preferred DVD burning software.

If you want to use the Windows Disk Image Burner to create an installation DVD, go to the location where the ISO file is saved. Right-click the ISO file and select Properties. On the General tab, click Change and select Windows Explorer for the program you would like to use to open ISO files and select Apply. Then right-click the ISO file and select Burn disc image.

If you want to install Windows 10 directly from the ISO file without using a DVD or flash drive, you can do so by mounting the ISO file. This will perform an upgrade of your current operating system to Windows 10.

Upgrading windows 7 from 32 bit to 64 bit

Replies (9) 

The Windows 7 product key will activate both 32 and 64Bit versions, so that is not an issue. However since your key was already activated, you may need to activate by phone this time around (see the end of my response).

Upgrading from a 32Bit to 64Bit version requires a «Custom» / Clean install of Windows. So backup you documents to external media (USB Drive) and be prepared to re-install your applications, so locate the installation media and associated product keys.

For the 64Bit installation see the following (Steps 1, 2 and 4 for a USB installation):

1) Download the appropriate Windows 7 .ISO file which includes Service Pack 1
(Note: must match what your product key version is for)

How to find out if I have a 32 or 64Bit version of Windows installed on my computer:
http://windows.microsoft.com/en-us/windows7/find-out-32-or-64-bit

Windows 7 Home Premium 32Bit: http://msft.digitalrivercontent.net/win/X17-58996.iso
SHA1 Hash value: 6071b4553fcf0ea53d589a846b5ae76743dd68fc
Windows 7 Home Premium 64Bit: http://msft.digitalrivercontent.net/win/X17-58997.iso
SHA1 Hash value: 6c9058389c1e2e5122b7c933275f963edf1c07b9

Windows 7 Professional 32Bit: http://msft.digitalrivercontent.net/win/X17-59183.iso
SHA1 Hash value: d89937df3a9bc2ec1a1486195fd308cd3dade928
Windows 7 Professional 64Bit: http://msft.digitalrivercontent.net/win/X17-59186.iso
SHA1 Hash value: 0bcfc54019ea175b1ee51f6d2b207a3d14dd2b58

Windows 7 Ultimate 32Bit: http://msft.digitalrivercontent.net/win/X17-59463.iso
SHA1 Hash value: 65fce0f445d9bf7e78e43f17e441e08c63722657
Windows 7 Ultimate 64Bit: http://msft.digitalrivercontent.net/win/X17-59465.iso
SHA1 Hash value: 36ae90defbad9d9539e649b193ae573b77a71c83

2) After downloading the correct .iso file install HashCalc and validate the SHA1 hash value
is correct.
HashCalc: http://www.slavasoft.com/hashcalc/index.htm
(note: If the download is not corrupt, the value HashCalc returns will match the SHA1 value I posted)

a) Launch HashCalc and navigate to the location of the .iso file you downloaded.
(The default download location is: C:\Users\User account name\Downloads)
b) Remove all check marks from the list of HashCalc options except for SHA1.
c) Click the ‘Calculate’ button and wait for the SHA1 string of letters and number to be displayed.

3) Next use ImgBurn (or Gear ISO) to create a bootable DVD.
Choose the “Custom Installation (advanced)” option and remove the check mark(s)
to eliminate unwanted options.

ImgBurn — In addition to supporting the creation of Cds/DVDs from .ISO files,
it supports a wide range of other image file formats, and it’s free.
(BIN, CUE, DI, DVD, GI, IMG, MDS, NRG, PDI and ISO)
http://www.imgburn.com/

Screen shots to help you use ImgBurn: http://www.imgburn.com/index.php?act=screenshots
Burning ISO Images with ImgBurn article: http://neosmart.net/wiki/display/G/Burning+ISO+Images+with+ImgBurn
(The steps are the same for Windows 7 or Windows 8), except you are not creating a Repair disc but a full installation DVD)

Note: Always use high quality DVD+R media and the slowest burn speed (4x or 6x) if offered a choice.

How to perform a ‘Keyless Install’ of Windows:

Boot from the Windows 7 DVD disc you created and start the installation process.

After you enter user name and password you will be asked to:
‘Type your Windows product key’, do not enter a key.
Also located just below the box where you would enter the key is a box with a check mark
to ‘Automatically activate Windows when I am online’, remove the check mark and click ‘Next’.

You will now have a 30 day grace period in which to activate Windows.

During the grace period you can install your device drivers,
run Windows Updates and resolve any other problems or issues.
Once you are satisfied everything is functioning properly, then activate Windows.

Go to your computer manufacture’s support web site and check for Windows 7 drivers for your specific model number.

If there are Windows 7 drivers, then download to a folder on your hard drive and install all of them, starting with the Motherboard/chipset drivers, SATA, LAN, Audio, USB, Graphics, Webcam, Etc., and so on.

Graphics/Video drivers:
Check the Graphics card manufacture’s download site for the most recent Windows 7 drivers for your card.
ATI: http://support.amd.com/us/gpudownload/Pages/index.aspx
NVIDIA: http://www.nvidia.com/Download/index5.aspx?lang=en-us

Install the ‘Important’ updates that are available.

Do a small group (10 updates max at a time)of updates at a time,
reboot if prompted and install another small group of updates and so on,
saving any .NET Framework updates for last.

================== How to Activate Windows 7 by Internet ==============

1) Click Start and in the Search box type: Activate
2) Click on the ‘Activate Windows’ option at the top of the list
3) Click on ‘Activate Windows online now’
4) Enter your 25 character product key (not case sensitive)
5) Click ‘Next’ and wait for the key to be verified.